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The process features of the cold and warm extrusion for the piston pin have been simply compared.

简要分析了活塞销冷、温挤压工艺的特点。

The piston pin processed in the warm extrusion craft is the important component of internal combustion engine.

活塞销是内燃机的重要零件，采用温挤压工艺加工。

The melting and pitting of the concrete and the extrusion of metal supporting rods indicated this.

混凝土的熔化和点状的腐蚀和金属支撑筋条的挤出表明了这一点。

Nanjing factory production stars licensing Rubber machine with: plasticization ability, high yield, extrusion stability, and low energy consumption.

本厂生产的宁星牌橡塑机具有：塑化能力强、产量高、挤出稳定、耗能低等优点。

The polar body extrusion process of induced maturation is similar to naturally fertilized eggs.

在卵母细胞成熟过程中有受精膜举起的现象，说明精子入卵不是受精膜举起的必要条件。

Germinal vesicle breakdown and the first polar body (PB1) extrusion were observed in all groups.

观察各组生发卵泡破裂和第一极体(PB1)的形成，出现PB1的卵母细胞视为核成熟。

After extrusion of polar body and the completion of the first cell cycle, microfilaments concentrated to the cleavage furrows.

极体排出和第一次有丝分裂时微丝在卵裂沟处富集。

These results indicate that,(1) appropriate concentration of CHX can enhance the activation efficiency of oocytes;(2) CB can increase the two pronuclei formation rate of oocytes by inhibiting the extrusion of second polar body.

这些结果说明：(1)适当浓度的CHX能提高卵母细胞激活效果；(2)CB能抑制卵母细胞激活后第二极体排出，从而提高原核的形成率。

These results indicate that CHX at an appropriate concentration can improve the parthenogenetic development of buffalo oocytes, CB at an appropriate concentration may inhibit the extrusion of the first polar body and increase the proportion of activated oocytes with two pronuclei.

结果表明，适当浓度的CHX能提高卵母细胞激活效果，适当浓度的CB可抑制卵母细胞第二极体的排出，提高孤雌激活后双原核的比例。

The fiwww.yixuelw.cnrst polar body extrusion of mouse oocytes after 24 h of incubation in the presence of MXC (7.25 mg/L: 52.8%; 14.5 mg/L:44.4%;29 mg/L:22%) was significantly lower than than in the unexposed comtrol group (71.2%).

但在培养液培养24 h时PB1的排出率7.25 mg/L MXC组为52.8%，14.5 mg/L MXC组为44.4%，29 mg/L MXC组为22%，明显低于对照组的71.2%，差异具有统计学意义(P.05)。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。